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Finding the Fourth Proportional to 331.16, 496.56 and 125.57

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Solution

The fourth proportional to 331.16, 496.56 and 125.57 is: 188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.16 : 496.56 = 125.57 : x
  2. Step 2: Convert to fraction form
    331.16/496.56 = 125.57/x
  3. Step 3: Cross multiply
    331.16x = 496.56 × 125.57
  4. Step 4: Simplify right side
    331.16x = 62,351.96
  5. Step 5: Solve for x
    x = 62,351.96/331.16
  6. Step 6: Final answer
    x = 188.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.